wallace



(No Model.)

G. J. WALLACE.

VALVE FOR RADIATORS.

Patented0ot.21,1884.

JNITED STATES PATENT OFFICE.

GEORGE J. VVALLAGE, OF NEV YORK, N. Y.

VALVE FOR RADIATORS.

SPECIFICATION forming part of Letters Patent No. 305,880, dated October21, 1884-.

Application filed April 2, 1884. tNo model.)

To all whom, it may concern: I

Be it known that I, GEORGE J. WALLACE, aeitizen ot' the United States,residing at New York, in the State of New York, have in-- vented a newand useful Valve for Heaters or Radiators, of which the following is aspecification. 7

The nature of my invention consists in the combination of an auxiliarypiston-valve between the steam and return valves placed on the samestem, whereby when the steam and return passages of the radiator areclosed a communication between the steam and return pipes will be madeto prevent iree'zin'g or 001-" lection of condensation in steam orreturn pipes, and avoiding waterhammering in the pipes. securing therebya noiseless operation of the same.

In the accompanying drawings, Figure I represents a radiator with myimproved valve attached. Fig. 11 is an enlarged view of the valve insection.

Similar letters represent similar parts in the figures.

A represents a radiator arranged and con structed in any desired manner,where B is the pipe for admittingthesteam into the same, and G thereturn-pipe arranged in the usual manner.

.D is the valve chamber, to the ends of which the steam-pipe B andreturn-pipe 0, leading to and from the radiator, are connected, and tothe central part of which the main steampipe B and return pipe Q fromthe steamboiler (not shown in the drawings) are connected. The steam andreturn passages are arranged with suitable valves. E and F, situated'upon the valve-stem G, arranged and operated in the usual manner.Between the main steam and return pipes or passages B O a valve-seat, H,is arranged in the case D, in which a piston-valve, J. attached to thevalve-stem G, is made to operate. The three valves, E, F, and J, beingplaced upon the same valve-stem G, will be operated simultaneously. Whensteam is to be a lmitted into the radiator A, the valves E and F areop-ned at the same time and by the same operation, and at the same timethe valve us moved into its seat H, closing thereby the communicationbetween the steam and return passages B and G and allowing the steam toenter through the valve E and pipe'B into the radiator, while the returnpasses through pipe (7, valve F, into the return pipe 0, in the usualmanner. As soon as the valves E and F are closed the valve J .wi1l comeout of its scat H, forming thus a passage between the steampipe B'andreturn-pipe G. maintainingthereby the circulation and preventing acollection .of condensation inthe same, preventingthereby any possiblefreezing, and at the same time avoiding any water-hammer in the pipes,thereby securing a perfectly noiseless opera tion.

What I claim as my invention, and desire to secure by Letters Patent, is

In combination with the steam-valve E and return-valve F, theintermediate valve, J, placed upon one and the same valve-stem G in asuitable casing, D, and arranged to operate in combination with thesteamand return pipes and a radiator, in the manner and for the purposedescribed.

GEORGE J. WVALLAOE.

\Vitnesses:

HENRY E. RoEDER, WILLIAM P. SKIFFINGTON.

